Although there seems no prospect of any of the slams taking a step back after the hard fight for equality, it is an issue that continues to rumble on.
It hit the headlines last year at Wimbledon when the French player Gilles Simon argued the women's game was not as entertaining as the men's, and he added: "It's not only my point of view, it's the point of view of everybody in the locker room."
Murray does not think it is about entertainment but about fairness, and for him that means women playing the same format as men. Talking to the New York Times, he said: "It isn't about it being inferior. As I see them, they're two different sports.
"I'm not saying the men work harder than the women but, if you have to train to play five sets, it's a longer distance. It's like someone training to be a 400m runner and someone training to be a 600m runner.
"I think the women should play best-of-five sets. I don't see why they couldn't do it. It would mean the days in the slams are a little bit longer. And maybe it doesn't have to be from the first rounds. I think either the men go three sets or the women go five sets. I think that's more what the guys tend to complain about, rather than the equal prize money itself."
There is another debate about whether the men's game is now too physically punishing. The US Open is the only one of the slams that features a tie-break in the fifth set and many people think that should be the norm. There is another group, including Martina Navratilova, who believe the men would be better off playing best-of-three sets, as they do at every other tournament during the year aside from Davis Cup.
Murray does not agree. "Five sets at the slams is what makes them different. I would rather have the five-set rule for the men and the women. They did it before. They used to do it in the Tour finals and some of the big finals on the WTA Tour. So it's not like women cannot play five sets."